Export to web site missing index.html

I tried the Export to Website feature in DevonThink Pro Office, and I get a folder that contains–in nested folders–the database, and a CSS file called “website.” But there is no Index.html, or any other file that would allow access to the website contents. What am I missing?

See, for example, viewtopic.php?f=2&t=10475&p=49058&hilit=index.html#p49058